Operating Characteristics and Energy Distribution in Transferred Plasma Arc Systems PDF Download
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Author: Hyun Koo Choi
Publisher:
ISBN:
Category : Plasma arc melting
Languages : en
Pages : 850
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Book Description
"A specially-designed plasma chamber was constructed to study the operating characteristics of a dc plasma transferred arc struck between a fluid convective cathode and a water-cooled anode. The plasmagen gas consisted of pure argon and arc lengths as high as 7 cm were studied." --
Author: Hyun Koo Choi
Publisher:
ISBN:
Category : Plasma arc melting
Languages : en
Pages : 850
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Book Description
"A specially-designed plasma chamber was constructed to study the operating characteristics of a dc plasma transferred arc struck between a fluid convective cathode and a water-cooled anode. The plasmagen gas consisted of pure argon and arc lengths as high as 7 cm were studied." --
Author: Panayotis G. Tsantrizos
Publisher:
ISBN:
Category : Electric arc
Languages : en
Pages : 244
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Book Description
Author: Maher I. Boulos
Publisher: Springer Nature
ISBN: 3030849368
Category : Science
Languages : en
Pages : 1973
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Book Description
This authoritative reference presents a comprehensive review of the evolution of plasma science and technology fundamentals over the past five decades. One of this field’s principal challenges has been its multidisciplinary nature requiring coverage of fundamental plasma physics in plasma generation, transport phenomena under high-temperature conditions, involving momentum, heat and mass transfer, and high-temperature reaction kinetics, as well as fundamentals of material science under extreme conditions. The book is structured in five distinct parts, which are presented in a reader-friendly format allowing for detailed coverage of the science base and engineering aspects of the technology including plasma generation, mathematical modeling, diagnostics, and industrial applications of thermal plasma technology. This book is an essential resource for practicing engineers, research scientists, and graduate students working in the field.
Author: Sanjay Joshi
Publisher: Springer Nature
ISBN: 3031370694
Category : Technology & Engineering
Languages : en
Pages : 669
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Book Description
This textbook and reference provides a comprehensive treatment of additive manufacturing (AM) for metals, including design and digital work flows, process science and reliability, metallic systems, quality assurance, and applications. The book is rooted in the fundamental science necessary to develop and understand AM technologies, as well as the application of engineering principles covering several disciplines to successfully exploit this important technology. As additive manufacturing of metals is the fastest growing subset of this transformative technology, with the potential to make the widest impact to industrial production, Metals Additive Manufacturing: Design, Processes, Materials, Quality Assurance, and Applications is ideal for students in a range of engineering disciplines and practitioners working in aerospace, automotive, medical device manufacturing industries.
Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781722298333
Category :
Languages : en
Pages : 70
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Book Description
Significant advantages of the Variable Polarity Plasma Arc (VPPA) Welding Process include faster welding, fewer repairs, less joint preparation, reduced weldment distortion, and absence of porosity. Flow profiles and power distribution of argon plasma gas as a working fluid to produce plasma arc jet in the VPPA welding process was analyzed. Major loss of heat transfer for flow through the nozzle is convective heat transfer; for the plasma jet flow between the outlet of the nozzle and workpiece is radiative heat transfer; and for the flow through the keyhole of the workpiece is convective heat transfer. The majority of the power absorbed by the keyhole of the workpiece is used for melting the solid metal workpiece into a molten metallic puddle. The crown and root widths and the crown and root heights can be predicted. An algorithm for promoting automatic control of flow parameters and the dimensions of the final product of the welding specification to be used for the VPPA Welding System operated at MSFC are provided. Hung, R. J. and Lee, C. C. and Liu, J. W. Unspecified Center...
Author: E. R. G. Eckert
Publisher: Wiley-Interscience
ISBN:
Category : Science
Languages : en
Pages : 714
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Book Description
Continuing the annual review work started in 1954 at the University of Minnesota's Heat Transfer Laboratory, this prestigous volume collates the reviews from the International Journal of Heat and Mass Transfer from 1976 through 1986. Together with a comprehensive author and subject index, it provides the tools for continuous improvements in the efficiency of engineering devices, including the recent awareness of the necessity to conserve energy and to find new energy sources. As an invaluable guide for locating existing literature on important topics, this work helps engineers and students keep abreast of recent developments in specialized research areas.
Author: National Aeronautics and Space Adm Nasa
Publisher:
ISBN: 9781731163431
Category :
Languages : en
Pages : 76
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Book Description
Significant advantages of the Variable Polarity Plasma Arc (VPPA) Welding Process include faster welding, fewer repairs, less joint preparation, reduced weldment distortion, and absence of porosity. The power distribution was analyzed for an argon plasma gas flow constituting the fluid in the VPPA Welding Process. The major heat loss at the torch nozzle is convective heat transfer; in the space between the outlet of the nozzle and the workpiece; radiative heat transfer; and in the keyhole in the workpiece, convective heat transfer. The power absorbed at the workpiece produces the molten puddle that solidifies into the weld bead. Crown and root widths, and crown and root heights of the weld bead are predicted. The basis is provided for an algorithm for automatic control of VPPA welding machine parameters to obtain desired weld bead dimensions. Hung, R. J. and Zhu, G. J. Unspecified Center...
Author: James A. Menart
Publisher:
ISBN:
Category :
Languages : en
Pages : 632
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Book Description
Author: T. A. Engh
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 404
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Book Description
Author: Christian Bickert
Publisher: Metallurgical Society of the Canadian Institute of Mining, Metallurgy and Petroleum = La Société de la métallurgie de l'institut canadien des mines, de la métallurgie et du pétrole
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 1026
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Book Description
